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A husband and wife appar in an interview...

A husband and wife appar in an interview for two vacancies in the same office. The probability of husbands selection is `(1)/(4)` and that wifes selection is `(1)/(5)`. Find the probability that (i)both are selected(ii)only one of them will be selected,(iii)none of them will be selected.

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The correct Answer is:
`(1)/(20)`,(7)/(20)`,`(12)/(20)`
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